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LEAF Standard
 

LEAF-Standard

 

The Leading Edge Air Foil Standard airframe is constructed from 6061 or 6063 aluminium tube 1 1/2 in x .049 wall. Each spar is drilled, wood doweled, sleeved, bushed, and end capped. The control bar (51in or 58in wide) and kingpost are constructed from 1in x .090 wall 6063-T832 alloy.
 
All wires are 3/32in 7x7 stainless steel clear vinyl coated. All wires are solid swedged with two nico’s. Two AN 155-16S aircraft turnbuckles in the top rigging allow wires to be tightened after assembly.
 
All tangs, 3 position control bar box, king post bracket. Wrap around nose plate, and thimbles are stainless steel. Wing nuts, castle nuts, nylocks, and bolts are aircraft grade.
 
The sailwas made from Howe & Bainbridge 3.8 oz stabilised dacron and was available in 11 colours. Prior to sewing, the cloth is overlapped and attached with double sided tape to ensure positive sewing edges. All seams are double zig-zag reinforced at stress areas. The sails are cut to compensate for spar deflection.
 
A prone harness with height adjustment is constructed from 6000 lb test seat belt type webbing. MS 70114 parachute buckles allow leg and back adjustment with a proof load of 2500 lb. The prone harness comes with knee hangers and an optional foot stirrup.
 
The kingpost and control bars have black powder baked-on epoxy, and saddles, Wingpost and cables are standard on the 19ft and 2 ft models. It was sold with the prone harness and knee hangers, carabiner, sail ties, cordura cover, and a copy of ‘Guide to Rogollo Flight, Basic’.
 
15 x 15
Leading edge: 15 ft
Keel length: 15 ft
Wing span: 19.7 ft
Wing area: 140 sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 36 lb
Pilot weight: 100-120 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
16 x 16
Leading edge: 16 ft
Keel length: 16 ft
Wing span: 21 ft
Wing area: 160 sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 37 lb
Pilot weight: 120-140 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
17 x 17
Leading edge: 17 ft
Keel length: 17 ft
Wing span: 22.5 ft
Wing area: 181 sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 38 lb
Pilot weight: 140-160 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
18 x 18
Leading edge: 18 ft
Keel length: 18 ft
Wing span: 23.6 ft
Wing area: ------- sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 39 lb
Pilot weight: 160-180 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
19 x 19
Leading edge: 19 ft
Keel length: 19 ft
Wing span: 25 ft
Wing area: 228 sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 40 lb
Pilot weight: 180-200 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
20 x 20
Leading edge: 20 ft
Keel length: 20 ft
Wing span: 26.3 ft
Wing area: 254 sq,ft
Aspect ratio: 2.75
Nose angle: 8˚
Sail billow: 4˚
Weight: 41 lb
Pilot weight: 200-220 lb
Takeoff speed: 15 mph
Stall speed: 17 mph
Max speed: 44 mph
Best glide ratio (L/D): 4:1
Best L/D speed: 24 mph
Min sink: 480 fpm
 
LEAF-Std-ld
 
 
 
 


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